Question

The intensity of reverberation is higher in a closed and empty house.(give scientific reasons)

Answer 1

HOLA friend!!
Rajdeep here....

First of all, what is Reverberation?

Reverberation is the persistence of sound in our ears after the impact of the original sound has ceased to act on our ears. Persistence of sound for a human ear is only 0.1 second. The sound, if reflects back before 0.1 seconds in our ears, we cannot distinguish between the original sound and reflected sound. This is called Reverberation. In this way, reverberation is different from echo, as in echo, we can easily distinguish between the original sound and the reflected sound.

Now, to answer your question:

Reverberation is more in a closed house? Why?

A house  (room) is closed, this means that there is no scope for the sound waves to escape and leave the room. Thus, it has to reflect back from the walls and reach your ears; After reaching your ears, a part of the sound, which was left to be reflected, will again get reflected from the opposite wall and again reach your ears. Hence, the intensity of the reflected sound will seem to be more.

Why does the intensity seem to be more in an empty room?

Always remember, that things in a room (furniture, appliances, etc) absorb the produced sound, due to which the intensity of the sound gradually decreases and the reflected sound is of very low intensity. If the room is empty, the sound will travel inside the room, unabsorbed by anything. So, its intensity will almost remain unaltered, and so, the reflected sound will be of more intensity.



Hope my answer is satisfactory....
Thanks!!!!(^-^)